Those areas were part of Congress Poland of the Russian Empire.
I know enough about the area, but am fully tied down with the Poland Project at the moment.
However, I believe categorization structure could reflect like I am doing for the Poland Project, using a present day village information as an index for anything in any point in history for that village. This solves having to create historical region projects/categories. The village category could have a description of the timeline within it.
I bring this up, because we need more volunteers to get involved and help organize these areas. I would be happy to help advise anyone who is interested. :)